1. (noun)Trojan, Dardan, Dardanian a native of ancient Troy
2. (adj)trojan, trojan horse a program that appears desirable but actually contains something harmful "the contents of a trojan can be a virus or a worm"; "when he downloaded the free game it turned out to be a trojan horse"
3. (adj)Trojan of or relating to the ancient city of Troy or its inhabitants "Trojan cities"